Single line JSON file???

Hello,
I created a fairly long JSON file using Notepad (I also tried with Notepad++).

For now, I have placed all the data on a single line (here's a small part):
data ='[{"fed" : 13},{"fed" : "etre"},{"fed" : "un deiz all eo"},{"fed" : "BIKEN"},{"fed" : "BIRVIKEN"},{"fed" : "BISKOAZH"}, (etc...)

And it works perfectly like this.

BUT if I try to write it over multiple lines for better readability:
data ='[{"fed" : 13},
{"fed" : "etre"},
{"fed" : "un deiz all eo"},
{"fed" : "BIKEN"},
(etc....)

=> I get an error message when launching the program (javascript) (console: "invalid character" (this corresponds to the line break):

What should I do? All the JSON file examples I found on the internet are written over multiple lines!
Thank you in advance.